Adjustable dual-screen head-mounted displays

Patent metadata

Field	Value
Publication number	US-9874755-B2
Application number	US-201514861917-A
Country	US
Kind code	B2
Filing date	Sep 22, 2015
Priority date	Jun 15, 2015
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A head-mounted display includes a first display screen and a second display screen to display images to respective eyes of a user. The head-mounted display further includes a first member comprising a first rack and a second member comprising a second rack. The first member is coupled to the first display screen, and the second member is coupled to the second display screen. The head-mounted display includes a button and a gear train to transfer a linear sliding motion of the button to a linear motion of the first rack in a first direction and a linear motion of the second rack in a second direction opposite to the first direction. The gear train includes a first gear engaged with the first rack and a second gear concurrently engaged with the first gear and the second rack.

First claim

What is claimed is:

1. A head-mounted display comprising:
a first display screen and a second display screen to display images to respective eyes of a user;
a first member comprising a first rack having teeth, the first member coupled to the first display screen;
a second member comprising a second rack having teeth, the second member coupled to the second display screen;
a button to be slid to adjust a distance between the first and second display screens; and
a gear train, coupled to the button, to transfer a linear sliding motion of the button to a linear motion of the first rack in a first direction and a linear motion of the second rack in a second direction opposite to the first direction, the gear train comprising:
a first gear having teeth engaged with teeth of the first rack; and
a second gear having teeth engaged with teeth of the first gear and teeth engaged with teeth of the second rack.

2. The head-mounted display of claim 1 , wherein:
the first member rigidly connects the first rack to the first display screen; and
the second member rigidly connects the second rack to the second display screen.

3. The head-mounted display of claim 1 , wherein the first display screen and the second display screen are configured to move concurrently toward each other or apart from each other in response to the linear sliding motion of the button.

4. The head-mounted display of claim 1 , wherein the gear train further comprises:
a third gear having teeth and aligned perpendicular to the first and second gears; and
a third rack comprising:
a first group of teeth engaged with teeth of the second gear; and
a second group of teeth engaged with teeth of the third gear, the first group of teeth perpendicular to the second group of teeth;
wherein the second gear is situated between the third rack and the first gear.

5. The head-mounted display of claim 4 , wherein the gear train further comprises:
a fourth gear having teeth engaged with teeth of the third gear;
a fifth gear coaxial with the fourth gear and having teeth; and
a fourth rack having teeth engaged with teeth of the fifth gear.

6. The head-mounted display of claim 5 , wherein a diameter of the fifth gear is greater than a diameter of the fourth gear.

7. The head-mounted display of claim 5 , wherein the button comprises:
a first surface coupled to the fourth rack via one or more springs; and
a plurality of teeth on a second surface opposite to the first surface of the button.

8. The head-mounted display of claim 7 , further comprising:
a cover with an opening for the button to extend outward from the opening, the opening including an inner edge with a plurality of teeth to engage with the plurality of teeth of the second surface of the button,
wherein the plurality of teeth on the second surface of the button is to disengage with the plurality of teeth of the edge of the opening when the button is pushed upward to compress the one or more springs toward the fourth rack, to allow the linear sliding motion of the button.

9. The head-mounted display of claim 1 , further comprising:
a first eye cup coupled to the first member, the first display screen being disposed between the first member and the first eye cup, and
a second eye cup coupled to the second member, the second display screen being disposed between the second member and the second eye cup.

10. The head-mounted display of claim 9 , further comprising:
a first lens coupled to the first eye cup, the first eye cup being disposed between the first lens and the first display screen; and
a second lens coupled to the second eye cup, the second eye cup being disposed between the second lens and the second display screen.

11. The head-mounted display of claim 9 , further comprising:
a top rail coupled to a first edge of the first eye cup and a first edge of the second eye cup; and
a bottom rail coupled to a second edge of the first eye cup and a second edge of the second eye cup,
wherein the bottom rail is parallel to the top rail, the first edge of the first eye cup is parallel to the second edge of the first eye cup, and the first edge of the second eye cup is parallel to the second edge of the second eye cup.

12. The head-mounted display of claim 11 , further comprising:
a middle rail located between and parallel to the top rail and the bottom rail, the middle rail coupled to the first member and the second member to guide linear motions of the first member and the second member along the middle rail.

13. The head-mounted display of claim 11 , wherein the top rail and the bottom rail are positioned to guide linear motions of the first display screen and the second display screen.

14. The head-mounted display of claim 11 , further comprising a bottom holder coupled to the first and second eye cups, the first and second display screens, the gear train, and the bottom rail.

15. A head-mounted display comprising:
a first eye cup and a second eye cup corresponding to respective eyes of a user;
a first display screen coupled to the first eye cup and a second display screen coupled to the second eye cup, the first display screen and the second display screen to display images to the respective eyes of the user;
a first member comprising a first rack having teeth, the first member coupled to the first eye cup to press the first display screen between the first member and the first eye cup;
a second member comprising a second rack having teeth, the second member coupled to the second eye cup to press the second display screen between the second member and the second eye cup;
a button to be slid to adjust a distance between the first and second display screens; and
a gear train, coupled to the button, to transfer a linear sliding motion of the button to a linear motion of the first rack in a first direction and a linear motion of the second rack in a second direction opposite to the first direction, the gear train comprising:
a first gear having teeth engaged with teeth of the first rack; and
a second gear having teeth engaged with teeth of the first gear and teeth engaged with teeth of the second rack.

16. An assembly to position two displays to provide views to a user's eyes, the assembly comprising:
a first member comprising a first rack having teeth, the first member to couple to a first display screen;
a second member comprising a second rack having teeth, the second member to couple to a second display screen;
a button to be slid to adjust a distance between the first and second display screens; and
a gear train, coupled to the button, to transfer a linear sliding motion of the button to a linear motion of the first rack in a first direction and a linear motion of the second rack in a second direction opposite to the first direction, the gear train comprising:
a first gear having teeth engaged with teeth of the first rack; and
a second gear having teeth engaged with teeth of the first gear and teeth engaged with teeth of the second rack.

Assignees

• Oculus Vr Llc

Inventors

• Tempel Mark Alan
• Drinkwater Jared I
• Miller Robin Michael
• Sullivan Joseph Patrick

Classifications

• G02B2027/0154

  with movable elements · CPC title

• G02B2027/0161

  characterised by the relative positioning of the constitutive elements · CPC title

• G02B27/0176 Primary

  characterised by mechanical features · CPC title